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Athul Dileep, Santosh Joshi & Donald Wayne Kurtz

TESS Exploration of Targets Investigated for the Nainital-Cape Survey Project

(Volume 93 - Année 2024 — No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation)
DOI: 10.25518/0037-9565.11653
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Open Access

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Abstract

The Nainital-Cape Survey was initiated more than two decades ago aiming to search for and study the pulsational variability in two subclasses of chemically peculiar (CP) stars, namely the Ap and Am stars. In this paper, we present the TESS photometry of 4 targets out of the 381 sample stars observed under the survey, which were not studied before using TESS data. Our results suggest that HD34060 is a rotational variable, HD 25487 is of eclipsing nature, HD 15550 exhibits pulsational variability while HD48953 is a non-variable star. The diverse variability detected in the studied sources places important constraints for the study of the internal structure and evolution of the CP stars in the presence of surface inhomogeneity, magnetic field, rotation and pulsation.

Keywords : Telescope: TESS, stars : chemically peculiar, variables: pulsating, variables: eclipsing, variables: rotational

Para citar este artículo

Athul Dileep, Santosh Joshi & Donald Wayne Kurtz, «TESS Exploration of Targets Investigated for the Nainital-Cape Survey Project», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, 227-235 URL : http://popups.ulg.be/0037-9565/index.php?id=11653.

Acerca de: Athul Dileep

Aryabhatta Research Institute of Observational Sciences, Nainital 263001, Uttarakhand, India and Mahatma Jyotiba Phule Rohilkhand University, Bareilly, Uttar Pradesh 243006, India. Corresponding author: dileep@aries.res.in

Acerca de: Santosh Joshi

Aryabhatta Research Institute of Observational Sciences, Nainital 263001, Uttarakhand, India

Acerca de: Donald Wayne Kurtz

Centre for Space Research, Physics Department, North-West University, Mahikeng 2735, South Africa